Claude Haiku 4.5 vs xAI: Grok 4.5
Compare Claude Haiku 4.5 by Anthropic against xAI: Grok 4.5 by xAI, context windows of 200K vs 500K, tested across 53 shared challenges.
Our Verdict
xAI: Grok 4.5
Claude Haiku 4.5Runner-up
No community votes yet. On paper, xAI: Grok 4.5 has the edge — newer, bigger context window.
Too close to call
API pricing
Cost per 1M tokens
Claude Haiku 4.5
Input
$1.00
2.0× cheaper
Output
$5.00
1.2× cheaper
xAI: Grok 4.5
Input
$2.00
Output
$6.00
Claude Haiku 4.5 is cheaper on both — 2.0× input, 1.2× output
Writing DNA
Style Comparison
Similarity
47%
Claude Haiku 4.5 uses 5.2x more headings
Claude Haiku 4.5
xAI: Grok 4.5
61%Vocabulary61%
47wSentence Length16w
0.64Hedging0.23
5.1Bold2.5
6.3Lists2.4
0.20Emoji0.09
2.46Headings0.48
0.17Transitions0.06
Based on 24 + 27 text responses
Research
What we learned reading every model
FAQ
